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1.
Heliyon ; 9(11): e21161, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37954293

RESUMO

Neurodegenerative disorders, caused by progressive neuron loss, are a global health issue. Among the various factors implicated in their pathogenesis, dysregulation of acetylcholinesterase activity has been recognized as a key contributor. Acetylcholinesterase breaks down the neurotransmitter acetylcholine, important for neural transmission. Evaluating phyto-compounds from Bacopa monnieri Linn. through in vitro and in silico analysis may expand their role as alternative therapeutic agents by modulating the function of acetylcholinesterase and complementing existing treatments. To accomplish this objective, chemical structures of phyto-compounds were retrieved from PubChem database and subjected to in silico and in vitro approaches. Virtual screening was performed through molecular docking and molecular dynamic simulation resulting in four top hit compounds including quercetin, apigenin, wogonin, and bacopaside X (novel lead compound for acetylcholinesterase inhibitor) with least binding score. Further, dose dependent acetylcholinesterase inhibition biochemical assay depicted that bacopaside X, apigenin, quercetin, and wogonin exhibited strong potential against acetylcholinesterase with IC50 values of 12.78 µM, 13.83 µM, 12.73 µM and 15.48 µM respectively, in comparison with the donepezil (IC50: 0.0204 µM). The in silico and in vitro research suggests that B. monnieri phyto-compounds have the potential to modulate molecular targets associated with neurodegenerative diseases and have a role in neuroprotection.

2.
J Biomol Struct Dyn ; 41(3): 765-777, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-34861809

RESUMO

Natural product such as flavonoids and their derivatives have a discernible capability to inhibit tumor formation and the growth of cancer cell, which have a vital link between diet and chronic disease prevention. Several plants and spices that contain flavonoid derivatives have been used in traditional medicine as disease preventative and therapeutic agents. Therefore, flavonoids could be used as chemotherapeutic drugs, indicating their potential clinical utility in cancer treatment. The purpose of this research was to discover and produce innovative pharmaceuticals from natural sources by introducing structural changes into flavonoids' backbones and changing their structures to improve biological activity and anticancer effects. In the current study, it was expected that the percent unbound values for the 15 compounds in human plasma would be low, ranging between 0.188 and 0.391. However, all compounds have a safe range and are not toxic to the brain. Compounds 2, 10, and 13 were shown to be permeable to the CNS (log PS > -3), but all other compounds had difficulty penetrating the CNS. Furthermore, all compounds had a low total clearance, ranging from 0.038 to 1.216 ml/min/kg, indicating that these compounds have a long half-life. None of the compounds caused skin sensitization (SS), and only compounds 1, 11, and 12 are expected to be AMES-positive, suggesting that the other compounds are not mutagenic. The result of the study showed based on the Drug-likeness and ADMET studies, only 3 compounds, including 3, 4, and 15, have a good pharmacokinetics propriety, the lowest toxicity, and good binding affinity towards Caspase 3 V266APDB (ID: 5I9B) as potential inhibitor candidates for the HeLa cell line, they have a low total clearance property and no AMES mutagenicity or hERG inhibition properties. These compounds (3,4,15) were examined to act as new cytotoxic drug candidates and would have an interest as starting point for designing compounds against the HeLa cell line.Communicated by Ramaswamy H. Sarma.


Assuntos
Produtos Biológicos , Humanos , Células HeLa , Simulação de Acoplamento Molecular , Produtos Biológicos/farmacologia , Produtos Biológicos/química , Simulação de Dinâmica Molecular , Flavonoides
3.
Genes (Basel) ; 13(12)2022 12 16.
Artigo em Inglês | MEDLINE | ID: mdl-36553643

RESUMO

Kinesin, as a member of the molecular motor protein superfamily, plays an essential function in various plants' developmental processes. Especially at the early stages of plant growth, including influences on plants' growth rate, yield, and quality. In this study, we did a genome-wide identification and expression profile analysis of the kinesin family in barley. Forty-two HvKINs were identified and screened from the barley genome, and a generated phylogenetic tree was used to compare the evolutionary relationships between Rice and Arabidopsis. The protein structure prediction, physicochemical properties, and bioinformatics of the HvKINs were also dissected. Our results reveal the important regulatory roles of HvKIN genes in barley growth. We found many cis- elements related to GA3 and ABA in homeopathic elements of the HvKIN gene and verified them by QRT-PCR, indicating their potential role in the barley kinesin family. The current study revealed the biological functions of barley kinesin genes in barley and will aid in further investigating the kinesin in other plant species.


Assuntos
Arabidopsis , Hordeum , Cinesinas/genética , Cinesinas/metabolismo , Filogenia , Proteínas de Plantas/metabolismo , Família Multigênica , Arabidopsis/genética
4.
Life (Basel) ; 12(10)2022 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-36294965

RESUMO

Milk thistle (Silybum marianum (L.)) is a wild medicinal herbal plant that is widely used in folk medicine due to its high content of secondary metabolites (SMs) and silymarin; however, the data regarding the response of milk thistle to salinity are still scarce and scanty. The present study evaluated the effect of salinity on a geographically diverse population of milk thistle and on the role of medium supplementation (MS) with ascorbic acid, thiourea, and moringa leaf extract in improving the SMs and growth-related attributes under salinity stress (SS). For germination, a 120 mM level of salinity was applied in the soil during the seedling stage. After salinity development, predetermined levels of the following compounds were used for MS: thiourea (250 µM), moringa leaf extract (3%), and ascorbic acid (500 µM). The data regarding growth attributes showed that SS impaired plant growth and development and increased SM production, including alkaloids, anthocyanin, and saponins. Moreover, ascorbic acid, followed by moringa leaf extract, was the most effective in improving growth by virtue of increased SMs, especially under salt stress conditions. The present study demonstrated that milk thistle could withstand moderate doses of SS, while MS improved all the growth parameters by increasing the accumulation of SMs.

5.
Pak J Pharm Sci ; 35(4(Special)): 1191-1200, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-36218097

RESUMO

Farsetia hamiltonii Royle is a medicinal plant of Cholistan desert, Pakistan, traditionally used for treating diabetes, oxidative stress, arthritis, fever, gastrointestinal and respiratory diseases. This study represents unprecedented phytochemical, enzymatic and biological properties of F. hamiltonii root extracts to prove floric uses. Evaluation of Phytochemical constituents was done by screening, total flavonoid, phenolic contents and gas chromatography-mass spectrometry. The phytochemical screening revealed the presence of glycosides, bounded anthraquinones, flavonoids, saponins, steroids, coumarins and diterpenes in root extracts. Eight compounds were identified in dichloromethane extract, whereas one compound was identified in methanol extract of root part of F. hamiltonii. The dichloromethane extract possesses significant lipoxygenase, chymotripsin and cholinesterase enzyme inhibition activities, whereas methanol extract possess lipoxygenase, alpha glucosidase, chymotrypsin and acetylcholinesterase enzyme inhibition activities. The antibacterial activity of methanol extract was significant against selected five microbial strains. Nine compounds were reported in root part of F. hamiltonii first time. The enzyme inhibition assays on anti-cholinesterase, anti-alpha glucosidase, antilipoxygenase, antichymotripsin and antibacterial activities were found significant for the extracts of root parts of F. hamiltonii. Therefore, results of this study justify folkloric therapeutic potential of F. hamiltonii root in treating diabetes, inflammations and infectious diseases.


Assuntos
Brassicaceae , Saponinas , Acetilcolinesterase , Antraquinonas , Antibacterianos/química , Antibacterianos/farmacologia , Antioxidantes/farmacologia , Inibidores da Colinesterase/farmacologia , Quimotripsina , Cumarínicos , Flavonoides/análise , Glicosídeos , Lipoxigenases , Metanol , Cloreto de Metileno , Compostos Fitoquímicos/farmacologia , Extratos Vegetais/química , Extratos Vegetais/farmacologia , alfa-Glucosidases
6.
Pak J Pharm Sci ; 35(4(Special)): 1261-1267, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-36218105

RESUMO

The purpose of this study was to purify the phytoconstituents and to explore the antibacterial, antifungal, phytotoxic and cytotoxic potential of dichloromethane and methanol extracts of aerial and root parts of Trigonella polycerata. The phytochemical study on methanol extract of aerial parts of the plant led to the isolation and purification of seven compounds that were identified as 3,4-dimethoxycinnamaldehyde, Trigocoumarin, 6,7,8-trimethoxycoumarin, Penduletin, 5-hydroxy-3,6,7,4´-tetramethoxyflavone, 3,5,7-trihydroxy-6,4-dimethoxyflavone and 5-hydroxy-4,7-dimethoxyflavone. These structures were elucidated by interpretation of EI-MS and NMR spectral data. The plant aerial parts methanol extract (TPAM) demonstrated higher antibacterial (78.99%), phytotoxic (85% growth regulation at 1000µg/mL) and cytotoxic activities (LD50: 45.643µg/mL). While the methanol root extract (TPRM) was highly active against bacteria's; Salmonella typhi (71.56%), Staphylococcus aureus (70.15%), Escherichia coli (69%), fungi like Candida albicans (70.21%) and moderately active against Brine shrimp larvae (LD50: 125.663µg/mL). The dichloromethane aerial (TPAD) and root (TPRD) extracts exhibited significant antibacterial (78.03% and 50.21% inhibitions respectively) and phytotoxic (55% growth regulation at 1000µg/mL) potential. Only TPAD indicated the best inhibition against fungi; Aspergillus flavus (75.31%) and moderate inhibition against Microsporum canis (42.21%). This phytochemical and biological work is the first time reported in Trigonella polycerata.


Assuntos
Trigonella , Antibacterianos/química , Antibacterianos/toxicidade , Antifúngicos/química , Metanol , Cloreto de Metileno/análise , Testes de Sensibilidade Microbiana , Compostos Fitoquímicos/análise , Compostos Fitoquímicos/farmacologia , Componentes Aéreos da Planta/química , Extratos Vegetais/toxicidade
7.
Genes (Basel) ; 13(3)2022 03 10.
Artigo em Inglês | MEDLINE | ID: mdl-35328041

RESUMO

The wheat plant requires elevated phosphorus levels for its normal growth and yield, but continuously depleting non-renewable phosphorus reserves in the soil is one of the biggest challenges in agricultural production worldwide. The Phosphorus Starvation Tolerance 1 (PSTOL1) gene has been reported to play a key role in efficient P uptake, deeper rooting, and high yield in rice. However, the function of the PSTOL1 gene in wheat is still unclear. In this study, a total of 22 PSTOL1 orthologs were identified in the wheat genome, and found that wheat PSTOL1 orthologs are unevenly distributed on chromosomes, and these genes were under strong purifying selection. Under different phosphorus regimes, wheat PSTOL1 genes showed differential expression patterns in different tissues. These results strengthen the classification of Pakistan-13 as a P-efficient cultivar and Shafaq-06 as a P-inefficient cultivar. Phenotypic characterization demonstrated that Pakistan-13 wheat cultivar has significantly increased P uptake, root length, root volume, and root surface area compared to Shafaq-06. Some wheat PSTOL1 orthologs are co-localized with phosphorus starvation's related quantitative trait loci (QTLs), suggesting their potential role in phosphorus use efficiency. Altogether, these results highlight the role of the wheat PSTOL1 genes in wheat P uptake, root architecture, and efficient plant growth. This comprehensive study will be helpful for devising sustainable strategies for wheat crop production and adaptation to phosphorus insufficiency.


Assuntos
Oryza , Fósforo , Oryza/genética , Fósforo/metabolismo , Raízes de Plantas/metabolismo , Locos de Características Quantitativas , Triticum/genética , Triticum/metabolismo
8.
Pak J Pharm Sci ; 35(6): 1549-1556, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36789814

RESUMO

Plants are always better choice for treatment of disease in contrast to synthetic agents due to their less toxicity, and free availability with minor limitations of identifications, purity and potency which should be addressed. The objective of current study was to explore the anti-inflammatory effect of methanol extract of Yucca elephantipes roots by using oxidative burst assay and carrageen an induced rat paw edema. GC-MS analysis was carried for the determination of ani-inflammatory potential of fatty acids and other phytochemicals present in Yucca elephantipes roots. Among fifteen detected compounds trans-13-octadecenoic acid, n-hexadecanoic acid and 4-hydroxy benzoic acid were found as 84.21%, 5.21% and 2.17% respectively. Oxidative burst assay showed anti-inflammatory potential of Yucca elephantipes roots 74.58±0.32% with IC50 of 15.3±2.2µg/mL as compared to Ibuprofen with percentage of inhibition 73.20±0.17% and IC50 was 11.2±0.98µg/mL. Fortunately, less than 8g/kg dose of the Yucca elephantipes roots found safe in albino rats. Interestingly, in-vivo carrageen an induced paw edema method proved its anti-inflammatory potential at dose 100 and 200mg/kg in albino rats. Conclusively, 200mg/kg dose of Yucca elephantipes roots extract was optimized for 88.89±0.015% anti-inflammatory effect which can be considered most potent, safe and better alternative of synthetic drugs.


Assuntos
Extratos Vegetais , Yucca , Anti-Inflamatórios/uso terapêutico , Edema/induzido quimicamente , Edema/tratamento farmacológico , Extratos Vegetais/química , Yucca/química , Animais , Ratos
9.
Plants (Basel) ; 12(1)2022 Dec 29.
Artigo em Inglês | MEDLINE | ID: mdl-36616290

RESUMO

The regeneration of the high-yielding multilocular types has not been attempted, although successful regeneration and transformation in brassica have been done. Here, we report efficient regeneration and transformation protocols for two B. rapa genotypes; UAF11 and Toria. The B. rapa cv UAF11 is a multilocular, non-shattering, and high-yielding genotype, while Toria is the bilocular type. For UAF11 8 shoots and for Toria 7 shoots, explants were observed on MS supplemented with 3 mg/L BAP + 0.4 mg/L NAA + 0.01 mg/L GA3 + 5 mg/L AgNO3 + 0.75 mg/L Potassium Iodide (KI), MS salt supplemented with 1 mg/L IBA and 0.37 mg/L KI produced an equal number of roots (3) in UAF11 and Toria. For the establishment of transformation protocols, Agrobacterium-mediated floral dip transformation was attempted using different induction media, infection time, and flower stages. The induction medium III yielded a maximum of 7.2% transformants on half-opened flowers and 5.2% transformants on fully opened flowers in UAF11 and Toria, respectively, with 15 min of inoculation. This study would provide the basis for the improvement of tissue culture and transformation protocols in multilocular and bilocular Brassica genotypes.

10.
Pak J Pharm Sci ; 34(1(Special)): 403-409, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34275786

RESUMO

This study was carried out to isolate the secondary metabolites and to evaluate the antibacterial, antifungal, antioxidant, phytotoxic, anti-leishmanial and α-glucosidase activities of dichloromethane and methanol extracts of whole plant of Astragalus creticus. Preliminary phytochemical screening indicated flavonoids, saponins, tannins and cardiac glycosides in this plant. Phytochemical evaluation of methanol extract resulted in isolation and characterization of Ethyl gallate, 1-triacontanoic acid, quercimeritrin, kaempferol-7-O-ß-D-glucopyranose, myricetin, kaempferol, betulinic acid, stigmasterol and Daucosterol. The structures of the compounds were determined by Mass and NMR spectroscopy. The methanol extract exhibited better activity against Staphylococcus aureus (58.75%) while dichloromethane extract was found to be very active against Bacillus subtilis (56.30%).The methanol extract demonstrated highly significant phytotoxic (92.68% at 1000µg/ml) and antioxidant (64.55±0.43%) potential while both extracts identified best inhibition of α-glucosidase enzyme. The plant extracts showed non-significant antifungal and anti-leishmanial activities. To our knowledge, it's a first research study on Astragalus creticus that indicate a great biological and phytochemical potential in it.


Assuntos
Anti-Infecciosos/farmacologia , Antioxidantes/farmacologia , Astrágalo , Inibidores de Glicosídeo Hidrolases/farmacologia , Extratos Vegetais/farmacologia , Araceae/efeitos dos fármacos , Bacillus subtilis/efeitos dos fármacos , Extratos Vegetais/química , Staphylococcus aureus/efeitos dos fármacos , alfa-Glucosidases/efeitos dos fármacos
11.
J Vis Exp ; (164)2020 10 06.
Artigo em Inglês | MEDLINE | ID: mdl-33104071

RESUMO

Male sterility is an important agronomic trait for hybrid seed production that is usually characterized by functional defects in male reproductive organs/gametes. Recent advances in CRISPR-Cas9 genome editing technology allow for high editing efficacy and timesaving knockout mutations of endogenous candidate genes at specific sites. Additionally, Agrobacterium-mediated genetic transformation of rice is also a key method for gene modification, which has been widely adopted by many public and private laboratories. In this study, we applied CRISPR-Cas9 genome editing tools and successfully generated three male sterile mutant lines by targeted genome editing of OsABCG15 in a japonica cultivar. We used a modified Agrobacterium-mediated rice transformation method that could provide excellent means of genetic emasculation for hybrid seed production in rice. Transgenic plants can be obtained within 2-3 months and homozygous transformants were screened by genotyping using PCR amplification and Sanger sequencing. Basic phenotypic characterization of the male sterile homozygous line was performed by microscopic observation of the rice male reproductive organs, pollen viability analysis by iodine potassium iodide (I2-KI) staining semi-thin cross-sectioning of developing anthers.


Assuntos
Agrobacterium/genética , Oryza/genética , Oryza/fisiologia , Pólen/crescimento & desenvolvimento , Pólen/genética , Transformação Genética , Sequência de Bases , Sistemas CRISPR-Cas/genética , Edição de Genes , Genótipo , Mutagênese/genética , Mutação/genética , Fenótipo , Plantas Geneticamente Modificadas/genética , Reprodução/fisiologia , Plântula/genética , Técnicas de Cultura de Tecidos
12.
Plant Physiol ; 182(2): 962-976, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31772077

RESUMO

The timely programmed cell death (PCD) of the tapetum, the innermost somatic anther cell layer in flowering plants, is critical for pollen development, including the deposition and patterning of the pollen wall. Although several genes involved in tapetal PCD and pollen wall development have been characterized, the underlying regulatory mechanism remains elusive. Here we report that PERSISTENT TAPETAL CELL2 (PTC2), which encodes an AT-hook nuclear localized protein in rice (Oryza sativa), is required for normal tapetal PCD and pollen wall development. The mutant ptc2 showed persistent tapetal cells and abnormal pollen wall patterning including absent nexine, collapsed bacula, and disordered tectum. The defective tapetal PCD phenotype of ptc2 was similar to that of a PCD delayed mutant, ptc1, in rice, while the abnormal pollen wall patterning resembled that of a pollen wall defective mutant, Transposable Element Silencing Via AT-Hook, in Arabidopsis (Arabidopsis thaliana). Levels of anther cutin monomers in ptc2 anthers were significantly reduced, as was expression of a series of lipid biosynthetic genes. PTC2 transcript and protein were shown to be present in the anther after meiosis, consistent with the observed phenotype. Based on these data, we propose a model explaining how PTC2 affects anther and pollen development. The characterization of PTC2 in tapetal PCD and pollen wall patterning expands our understanding of the regulatory network of male reproductive development in rice and will aid future breeding approaches.


Assuntos
Apoptose/genética , Flores/crescimento & desenvolvimento , Oryza/crescimento & desenvolvimento , Oryza/genética , Infertilidade das Plantas/genética , Proteínas de Plantas/metabolismo , Pólen/crescimento & desenvolvimento , Motivos AT-Hook/genética , Arabidopsis/genética , Núcleo Celular/metabolismo , Fragmentação do DNA , Flores/genética , Flores/metabolismo , Flores/ultraestrutura , Perfilação da Expressão Gênica , Regulação da Expressão Gênica no Desenvolvimento/genética , Regulação da Expressão Gênica de Plantas/genética , Redes Reguladoras de Genes , Genótipo , Metabolismo dos Lipídeos/genética , Lipídeos/análise , Microscopia Eletrônica de Varredura , Mutação , Oryza/metabolismo , Fenótipo , Proteínas de Plantas/genética , Pólen/genética , Pólen/metabolismo , Pólen/ultraestrutura , RNA-Seq , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo
13.
New Phytol ; 225(1): 356-375, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31433495

RESUMO

Degeneration of apical spikelets and reduced panicle fertility are common reasons for low seed-setting rate in rice (Oryza sativa). However, little is known about the underlying molecular mechanisms. Here, we report a novel degenerated panicle and partial sterility 1 (dps1) mutant that showed panicle apical degeneration and reduced fertility in middle spikelets. dps1 plants were characterized by small whitish anthers with altered cuticle morphology and absence of pollen grains. Amounts of cuticular wax and cutin were significantly reduced in dps1 anthers. Panicles of dps1 plants showed an accumulation of reactive oxygen species (ROS), lower antioxidant activity, and increased programmed cell death. Map-based cloning revealed that DPS1 encodes a mitochondrial-localized protein containing a cystathionine ß-synthase domain that showed the highest expression in panicles and anthers. DPS1 physically interacted with mitochondrial thioredoxin proteins Trx1 and Trx20, and it participated in ROS scavenging. Global gene expression analysis in dps1 revealed that biological processes related to fatty acid metabolism and ROS homeostasis were significantly affected, and the expression of key genes involved in wax and cutin biosynthesis were downregulated. These results suggest that DPS1 plays a vital role in regulating ROS homeostasis, anther cuticle formation, and panicle development in rice.


Assuntos
Cistationina beta-Sintase/química , Flores/crescimento & desenvolvimento , Oryza/crescimento & desenvolvimento , Oryza/metabolismo , Proteínas de Plantas/química , Proteínas de Plantas/metabolismo , Morte Celular/efeitos dos fármacos , Fragmentação do DNA/efeitos dos fármacos , Ácidos Graxos/metabolismo , Regulação da Expressão Gênica de Plantas/efeitos dos fármacos , Genes de Plantas , Peróxido de Hidrogênio/toxicidade , Lipídeos de Membrana/metabolismo , Mitocôndrias/efeitos dos fármacos , Mitocôndrias/metabolismo , Mutação/genética , Oryza/efeitos dos fármacos , Oryza/genética , Fenótipo , Proteínas de Plantas/genética , Pólen/efeitos dos fármacos , Pólen/metabolismo , Ligação Proteica/efeitos dos fármacos , Domínios Proteicos , Espécies Reativas de Oxigênio/metabolismo , Reprodução/efeitos dos fármacos , Transcriptoma/genética , Ceras/metabolismo
14.
Pharmacogn Mag ; 13(52): 647-651, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29200727

RESUMO

BACKGROUND: Corchorus depressus (Cd) commonly known as Boa-phalee belonging to the family Tiliaceae having 50 genera and 450 species. Cd is not among the studied medicinal agent despite its potential in ethnopharmacology. OBJECTIVES: The present study investigated antioxidant, acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and α-glucosidase inhibitory activities of Cd. The dichloromethane and methanolic extracts of the Cd were evaluated for biological activities such as antioxidant and enzyme inhibitory activities of AChE, BChE, and α-glucosidase. MATERIALS AND METHODS: Antioxidant activity was evaluated by measuring free radical scavenging potential of Cd using 1,1-diphenyl-2-picrylhydrazyl. Enzyme inhibition activities were done by measuring optical density. RESULTS: The methanol extract of roots of Cd showed potential free radical scavenging activity 99% at concentration 16.1 µg/ml. AChE was inhibited by aerial part of dichloromethane fraction by 46.07% ± 0.45% while dichloromethane extracts of roots of Cd possessed significant activity against BChE with 86% inhibition compared with standard drug Eserine at concentration 0.5 mg/ml. The dichloromethane extract of roots of Cd showed 79% inhibition against α-glucosidase enzyme activity with IC50 62.8 ± 1.5 µg/ml. CONCLUSION: These findings suggest Cd as useful therapeutic option as antioxidant and inhibition of AChE, BChE, and α-glucosidase activities. SUMMARY: The aerial parts and roots of Corchorus depressus (Cd) were extracted in dichloromethane and methanolThe extract of roots of Cd showed free radical scavenging activity 99% at concentration 16.1 mg/ml, Ach inhibition by aerial parts of dichloromethane fraction by 46.07%, and 79% inhibition against a-glucosidase enzyme activity with IC50 62.8 ± 1.5 mg/mlThe dichloromethane and methanolic extracts of Cd exhibited antioxidant inhibition of acetyl cholinesterase, butyrylcholinesterase, and a-glucosidase activities. Abbreviations used: DPPH: 1,1-diphenyl-2-picrylhydrazyl, Cd: Corchorus depressus, AChE: Acetylcholinesterase, BChE: Butyrylcholinesterase, AD: Alzheimer's disease.

15.
Plant Physiol ; 173(1): 240-255, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27246096

RESUMO

Aliphatic and aromatic lipids are both essential structural components of the plant cuticle, an important interface between the plant and environment. Although cross links between aromatic and aliphatic or other moieties are known to be associated with the formation of leaf cutin and root and seed suberin, the contribution of aromatic lipids to the biosynthesis of anther cuticles and pollen walls remains elusive. In this study, we characterized the rice (Oryza sativa) male sterile mutant, defective pollen wall 2 (dpw2), which showed an abnormal anther cuticle, a defective pollen wall, and complete male sterility. Compared with the wild type, dpw2 anthers have increased amounts of cutin and waxes and decreased levels of lipidic and phenolic compounds. DPW2 encodes a cytoplasmically localized BAHD acyltransferase. In vitro assays demonstrated that recombinant DPW2 specifically transfers hydroxycinnamic acid moieties, using ω-hydroxy fatty acids as acyl acceptors and hydroxycinnamoyl-CoAs as acyl donors. Thus, The cytoplasmic hydroxycinnamoyl-CoA:ω-hydroxy fatty acid transferase DPW2 plays a fundamental role in male reproduction via the biosynthesis of key components of the anther cuticle and pollen wall.


Assuntos
Aciltransferases/metabolismo , Oryza/enzimologia , Oryza/crescimento & desenvolvimento , Proteínas de Plantas/metabolismo , Pólen/enzimologia , Pólen/crescimento & desenvolvimento , Sequência de Aminoácidos , Parede Celular/metabolismo , Clonagem Molecular , Regulação da Expressão Gênica de Plantas , Metabolismo dos Lipídeos , Lipídeos de Membrana/metabolismo , Modelos Biológicos , Mutação/genética , Oryza/genética , Oryza/ultraestrutura , Fenóis/metabolismo , Fenótipo , Pólen/ultraestrutura , Transporte Proteico , Proteínas Recombinantes/metabolismo , Análise de Sequência de Proteína , Ceras/metabolismo
16.
Afr J Tradit Complement Altern Med ; 13(6): 194-198, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-28480379

RESUMO

BACKGROUND: The aim of this study was to investigate Cytotoxic, α-Chymotrypsin and Urease inhibition activities of the plant Heliotropium dasycarpum. MATERIALS & METHODS: Dichloromethane and methanol extracts of the plant were evaluated for cytotoxic, α-Chymotrypsin and Urease inhibition by using in vivo Brine Shrimp lethality bioassay and in vitro enzymatic inhibition assays respectively. RESULTS: The methanol extract of the plant exhibited significant cytotoxic activity. Out of 30 brine shrimp larvae, 2 (6%), 26 (86%) and 28 (93%) larvae were survived at concentration of 1000µg/ml, 100µg/ml and 10µg/ml respectively with LD50; 215.837. Similarly 21 (70%), 25 (83%), 29 (96%) larvae were survived of dichloromethane plant extract with LD50; 6170.64. The methanol and dichloromethane extract exhibited 10.50±0.18% and 41.51±0.15% α-chymotrypsin enzyme inhibition respectively with IC50 values of greater than 500 µmol. The methanol extract showed 24.39±0.21% Urease enzyme inhibition with IC50 values of greater than 400 µmol While dichloromethane extract has 11.46±0.09% enzyme inhibition with IC50 values of greater than 500 µmol. CONCLUSION: The results clearly indicated that Heliotropium dasycarpum has cytotoxic potential and enzyme inhibition properties. Further study is needed to screen out antitumor and anti-ulcerative agents.


Assuntos
Quimotripsina/antagonistas & inibidores , Citotoxinas/farmacologia , Heliotropium/química , Extratos Vegetais/farmacologia , Urease/antagonistas & inibidores , Animais , Artemia , Metanol/farmacologia , Cloreto de Metileno/farmacologia
17.
Acta Pol Pharm ; 72(5): 821-7, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26665388

RESUMO

Ruellia is a genus of flowering plants commonly known as Ruellias or Wild Petunias which belongs to the family Acanthaceae. It contains about 250 genera and 2500 species. Most of these are shrubs, or twining vines; some are epiphytes. Only a few species are distributed in temperate regions. They are distributed in Indonesia and Malaysia, Africa, Brazil, Central America and Pakistan. Some of these are used as medicinal plants. Many species of the genus has antinociceptive, antioxidant, analgesic, antispasmolytic, antiulcer, antidiabetic and anti-inflammatory properties. The phytochemicals constituents: glycosides, alkaloids, flavonoids and triterpenoids are present. The genus has been traditionally claimed to be used for the treatment of flu, asthma, fever, bronchitis, high blood pressure, eczema, and diabetes. The objective of this review article is to summarize all the pharmacological and phytochemical evaluations or investigations to find area of gap and endorse this genus a step towards commercial drug. Hence, further work required is to isolate and characterize the active compounds responsible for these activities in this plant and bring this genus plants to commercial health market to serve community with their potential benefits.


Assuntos
Acanthaceae/química , Etnofarmacologia , Extratos Vegetais/farmacologia , Animais , Humanos , Compostos Fitoquímicos/análise , Fitoterapia
18.
J Ethnopharmacol ; 156: 347-52, 2014 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-25219602

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Folk herbal practitioners of the Cholistan desert claim Farsetia hamiltonii Royle (Brassicaceae) to treat diabetes, oxidative damages, diarrhea, fever, and abdominal cramps. The aim of this study was to scientifically find the potential of Farsetia hamiltonii in treating diabetes and gastrointestinal diseases. MATERIALS AND METHODS: In vivo anti-diabetic activity of Farsetia hamiltonii was studied on alloxan induced diabetic rats to justify its traditional use. The in vitro antispasmodic activity on isolated tissues of rabbit jejunum was also evaluated. In addition, several enzyme inhibition studies (lipoxygenase, tyrosinase, acetylcholinesterase (AchE), carbonic II anhydrase and phosphodiesterase I) and antioxidant activity of plant extracts were also conducted. RESULTS: In vivo experiments, Farsetia hamiltonii methanol extract (300 mg/kg) significantly lowered the fasting blood glucose (107.6 ± 1.249 mg/dL up to 4th day) comparable to positive control (Glibenclamide) throughout the study period. The in vitro antispasmodic activity on isolated tissues of rabbit jejunum on methanol extract showed concentration dependent (0.01-0.3 mg/ml) relaxation of spontaneous contractions with EC50 value 0.011 µM and high K(+) (80 mM) induced contraction (0.01-0.1 mg/ml) with EC50 value 0.066 mg/ml. Farsetia hamiltonii DCM and methanol extracts exhibited some antilipoxygenase activities while tyrosinase, acetylcholinesterase (AchE), carbonic II anhydrase, phosphodiesterase I, and antioxidant activity of plant extracts were not significant. CONCLUSIONS: Our results validate the traditional use of Farsetia hamiltonii for the traditional therapeutic potential in treating diabetes and gastrointestinal diseases.


Assuntos
Brassicaceae/química , Diabetes Mellitus Experimental/tratamento farmacológico , Hipoglicemiantes/farmacologia , Parassimpatolíticos/farmacologia , Extratos Vegetais/farmacologia , Aloxano/farmacologia , Animais , Glicemia/efeitos dos fármacos , Feminino , Jejuno/efeitos dos fármacos , Masculino , Coelhos , Ratos , Ratos Sprague-Dawley
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